Science Topics term usage 2009-01-12

This analysis excludes the activity of search-engine spiders, USGS users, and transactions resulting in errors.

(Table shows only the 40 most frequently chosen terms.)

956	earthquakes
409	earthquake occurrences
234	volcanoes
122	maps and atlases
84	real-time monitoring and reporting
58	climate change
52	floods
47	USGS map servers
47	geologic maps
45	topographic maps
43	energy resources
41	mineral resources
37	water quality
33	ground water
31	avian influenza
31	droughts
29	contamination and pollution
28	remote sensing
27	earthquake probabilities
26	geospatial analysis
25	surface water (non-marine)
23	invasive species
21	environmental health (human)
21	streamflow
19	animals
19	volcanic activity
17	fires
16	human impacts
16	health and disease
15	seismology
14	earth structure
14	desert ecosystems
14	global warming
12	acid deposition
12	stream-gage measurement
12	tsunamis
11	geochemistry
10	surface water quality
10	hydrology
10	endangered species

Science Topics term usage Monday, 2009-01-12